Display screen or portion thereof with a graphical user interface



The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing/photograph will be provided by the Office upon request and payment of the necessary fee.

The FIGURE is a front view of a display screen or portion thereof with a graphical user interface showing our new design.

The broken lines are for the purpose of illustrating a display screen or a portion thereof and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with a graphical user interface, as shown and described. 